The Mahina MerFin is a unique product. It is the first functional mermaid mono-fin on the market. Each Merfin is made with recycled rubber, and are one of the first eco friendly/recycled fins produced. The MerFin is soft, flexible and functional and will give you the speed and agility of any fish in the ocean. The MerFin is a great pool toy, a wonderful snorkelling fin or swimming device for fitness. The awesome fun of bodysurfing the waves is not to be missed! They are safe to use, with just one flick of the ankle strap the legs are free.